https://llvm.org/bugs/show_bug.cgi?id=25746
Bug ID: 25746
Summary: libFuzzer generated fuzzer does not properly generate
base64 encoded output on Android 6.0
Product: new-bugs
Version: trunk
Hardware: Other
OS: other
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: danielaus...@google.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
In llvm/llvm/lib/Fuzzer/FuzzerIO.cpp, PrintFileAsBase64 assumes that the system
under test is using a base64 utility which acts the same manner as the GNU
coreutils base64. On android 6.0, the base64 utility does not accept -w 0 as
valid, and fails with output:
Base64: usage: base64 [-di] [-w COLUMNS] [FILE...]
Encode or decode in base64.
-d decode
-i ignore non-alphabetic characters
-w wrap output at COLUMNS (default 76)
base64: -w < 1
This occurs upon generating a crashing test case, after the binary file is
output, and does not affect the binary file.
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